Synonym: conundrum, enigma, puzzle. Similar words: middle, fiddle, middle-class, middle class, in the middle of, middle ground, ridden, addle. Meaning: ['rɪdl] 
n. 1. a difficult problem 2. a coarse sieve (as for gravel). v. 1. pierce with many holes 2. set a difficult problem or riddle 3. separate with a riddle, as grain from chaff 4. spread or diffuse through 5. speak in riddles 6. explain a riddle.
n. 1. a difficult problem 2. a coarse sieve (as for gravel). v. 1. pierce with many holes 2. set a difficult problem or riddle 3. separate with a riddle, as grain from chaff 4. spread or diffuse through 5. speak in riddles 6. explain a riddle. 
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31 All is riddle and the key to a riddle, is another riddle. Ralph Waldo Emerson 
32 That's a good riddle. Did you make it up yourself?
33 He almost missed another, smaller envelope, addressed to Riddle in a round, childish hand.
34 As if a degree could solve the riddle of Comrade Cancer.
35 Why would Ian want to claim his inheritance and then give all his money away? It was a riddle to me.
36 Recently Riddle bought four fields which form part of a camping site at Miller's Bottom.
37 The chameleon on a mirror riddle is best kept in idealized form as a thought experiment.
38 Whatever the riddle is called, it flies in the face of 3, 000 years of logical philosophy.
39 Oedipus came to Thebes and solved the riddle of the Sphinx.
40 Vechey probably carried the vases around trying to solve the riddle.
41 Old man Riddle was cracked on religion and the old lady's father made a small fortune out of rabbit skins.
42 Unlike the lost-carbon riddle, the mysterious oxygen vanishing act in Bio2 was completely unexpected.
43 How could he make sense of it all unless he could first solve the riddle of himself?
44 Doctors have found a new clue to the riddle of cot death.
45 Other interviewers who have met Geri have tried to solve the riddle of her success.
45 Sentencedict.com try its best to collect and build good sentences.
46 Blinking riddle: The after-image appears to be Jesus.
47 Let's play a riddle - guessing game first.
48 Class spite and social angst riddle British corporate cultures.
49 The riddle remains inscrutable to us.
50 It's as vexing as the riddle of the Sphinx.
51 Yes, every tree as if is a mystery story the phantom, every flower mushroom seems to hide an ancient riddle.
52 Young singles gathered around for lantern riddle quiz and matchmaking games.
53 Consider that we are all insane, it will explain us to each other, and unriddle many riddle.
54 Collins was tempted to try out the riddle on the two men in the front seat.
55 If a wooer came she gave him some riddle to guess, and if he could not guess it(sentencedict.com), he was sent contemptuously away.
56 The ring may answer the riddle of another moon, Iapetus, which has a bright side and a very dark side.
57 The odd man added an additional riddle to the middles f the saddle.
58 REM sleep , however, is the proverbial riddle wrapped in a mystery inside an enigma.
59 It is certain that man will eventually solve the riddle of UFO.
60 This paper deals with the background of the celebrated Goodman's new riddle of induction and the logic and semantics of predicate grue.
More similar words: middle, fiddle, middle-class, middle class, in the middle of, middle ground, ridden, addle, meddle, cuddle, coddle, saddle, peddle, huddle, paddle, puddle, huddled, meddler, befuddle, befuddled, huddle together, meddlesome, hidden, midday, cuddly, rid, arid, ride, lurid, rider.